package Thread.Demo15Product;

/**
 * @Author wangzhipeng
 * @Date 2020-08-30 4:28 下午
 * @Description 测试生产者消费者问题2：信号灯法，标志位解决
 *  表演什么 观众就看什么
 */
public class TestPC2 {
    public static void main(String[] args) {
        TV tv = new TV();
        new Player(tv).start();
        new Watcher(tv).start();
    }
}
//生产者  演员
class Player extends Thread{
    TV tv;

    public Player(TV tv) {
        this.tv = tv;
    }

    @Override
    public void run() {
        for (int i = 0; i < 20; i++) {
            if(i%2==0){
                this.tv.play("迪迦奥特曼");
            }else {
                this.tv.play("记录美好生活");
            }
        }
    }
}

//消费者 观众
class Watcher extends Thread{
    TV tv;

    public Watcher(TV tv) {
        this.tv = tv;
    }

    @Override
    public void run() {
        for (int i = 0; i < 20; i++) {
            tv.watch();
        }
    }
}
//产品 节目
class TV{
    //演员表演的时候 观众等待
    //观众观看的时候，演员等待
    String voice;//比噢阿燕的节目
    boolean flag = true;

    //表演
    public synchronized void play(String voice) {
        if(!flag){ //假进入等待
            try {
                this.wait();
            } catch (InterruptedException e) {
                e.printStackTrace();
            }
        }


        System.out.println("演员表演了"+voice);
        //通知观众观看
        this.notifyAll();//通知唤醒
        this.voice = voice;
        this.flag = !this.flag;


    }

    //观看
    public synchronized void watch(){
        if(flag){
            try {
                this.wait();
            } catch (InterruptedException e) {
                e.printStackTrace();
            }
        }
        System.out.println("观众观看了"+voice);
        //通知演员表演
        this.notifyAll();
        this.flag = !this.flag;

    }
}
